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4.11 Upper System Board, Power Supply Board
Removing the Upper System Board and Power Supply Board
To remove the T4700CS/T4700CT/T4800CT's upper system board and power supply board,
follow the steps below and refer to figures 4-25 through 4-27.
1.
Turn off the power to the T4700CS/T4700CT/T4800CT. Disconnect the AC
adapter, power cord and all external cables connected to the T4700CS/T4700CT/
T4800CT.
2.
Remove the battery pack, optional memory card, optional PCMCIA card, HDD
pack, top cover, keyboard, status indicator panel, backup battery/microphone and
display assembly as described in sections 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9 and 4-
10.
3.
Remove the left hinge cover and tape, then remove the five M2.5x6 screws,
securing the upper system board cover.
4.
Lift off the upper system board cover, the FDD metal cover and the right hinge
cover (figure 4-25).
Figure 4-25 Removing the upper system board cover
4 - 2 6
T4700CS, T4700CT, T4800CT
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